Rokugatsu no Oka no Hanageshi

On a hill in June, a young man named Haruki encounters a mysterious girl named Hina who seems to appear only during the month of June. As they spend time together among the blooming poppies, a gentle bond forms between them, but Hina carries a secret that ties her to the hill and the fleeting season.

Haruki begins to uncover the truth behind Hina's existence and the reason she can only be there in June. As the month draws to a close, he must confront the inevitable separation and decide what he is willing to sacrifice to hold onto their connection.